Title: Block API Version
Last modified: July 19, 2026

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# Block API Version

 *  Resolved [dmccan](https://wordpress.org/support/users/dmccan/)
 * (@dmccan)
 * [1 day, 17 hours ago](https://wordpress.org/support/topic/block-api-version/)
 * Hi Jeff, 
   I see in the Chrome dev console a warning: “Note: The block “prismatic/
   blocks” is registered with API version 1. This means that the post editor may
   work as a non-iframe editor. Since all editors are planned to work as iframes
   in the future, set the `apiVersion` field to 3 and test the block inside the 
   iframe editor.” Best regards

Viewing 1 replies (of 1 total)

 *  Plugin Author [Jeff Starr](https://wordpress.org/support/users/specialk/)
 * (@specialk)
 * [1 day, 17 hours ago](https://wordpress.org/support/topic/block-api-version/#post-18969428)
 * Thanks for reporting, David. I will investigate and try to resolve in the next
   update. Cheers.

Viewing 1 replies (of 1 total)

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 * 1 reply
 * 2 participants
 * Last reply from: [Jeff Starr](https://wordpress.org/support/users/specialk/)
 * Last activity: [1 day, 17 hours ago](https://wordpress.org/support/topic/block-api-version/#post-18969428)
 * Status: resolved